<原著>歯列模型の三次元形状計測における口蓋基準平面と顎顔面骨格形態との空間的位置関係

概要

論文の詳細を見る
To establish a novel method for orthodontic diagnosis, which integrates three-dimensional shape measurements of dental casts and morphological analysis of the craniofacial skeleton, we constructed a new reference plane, the palatal reference plane. Measurement accuracy of the palatal reference plane, and its spatial relationship to the skeletal framework of the craniofacial skeleton were evaluated using postero-anterior and lateral cephalometric radiographs and three-dimensional shape data of maxillary dental casts, which was transferred by an anatomical facebow. The results were the followings: 1. The palatal reference plane (flat area of the hard palate) could be established by a fitting algorithm with the least squares method. 2. In postero-anterior cephalometric radiographs, the angular difference between the ANS-PNS plane and the palatal reference plane was 5.58 degrees (SD : 3.48). The difference between the A-PNS plane and the palatal reference plane was 2.19 degrees (SD : 1.43). 3. In lateral cephalometric radiographs, the angular difference in angle between the maxillary alveolus plane (J-J') and the palatal reference plane was 1.09 degrees (SD : 1.05). 4. In cases whose the palatal morphology was a smooth circular arc without prominent jugum in the palatal base, it was difficult to establish the reference plane. These results indicate that the three-dimensional application of the palatal reference plane, as a reference structure, would provide orthodontic diagnosis with accurate and abundant three-dimensional data concerning malocclusions.
北海道医療大学の論文
2002-06-30

<原著>歯列模型の三次元形状計測における口蓋基準平面と顎顔面骨格形態との空間的位置関係

スポンサーリンク

概要

著者

関連論文

スポンサーリンク